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Is a second fuel pump needed

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Old Jan 1, 2021 | 08:38 AM
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Default Is a second fuel pump needed

Just curious, is one Walbro 450 is enough for a 6.0, Precision 76/75, Stage 2 cam running around 12 lbs of boost on a street car? I installed 2 pumps in the tank with the intentions of activating the second pump when the boost hits around 5 lbs but not sure if I really need to worry about it, thoughts?
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Old Jan 1, 2021 | 09:36 AM
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What HP level?
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Old Jan 1, 2021 | 10:08 AM
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Pump requirement is going to depend on a few things
- fuel used
- base pressure plus boost pressure
- any restrictions in lines and filters
- voltage at pump or pumps
The simple answer is at ~ 600rwhp stock decapped truck injectors, rails and early return style regulator all works with 1 450 walbro on pump gas
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Old Jan 1, 2021 | 10:12 AM
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Bigger injectors and lower base pressure should get you even further on same pump - there are some calculators on line
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Old Jan 1, 2021 | 08:34 PM
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I took my car up to nearly 20 psi on 110, a single 450, and 60# injectors lol. I like to party lol
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